All models offer massive external claw extractors for controlled round feed, blade ejection, and three position safety. Available in 308 Win. or 300 WSM in a variety of barrel lengths, all SPRs have cold hammer forged MIL-SPEC barrels with hard chromed bores. These SPRs are held to +/- .001" headspace to produce and maintain 1 MOA accuracy, making them natural choices for long range target shooting and tactical competition. Available with internal magazine with hinged floorplate or a detachable box magazine. A one piece MIL-STD 1913 optical rail with an additional 20 MOA of elevation is factory installed. FN SPR rifles are fitted into matte black McMillan fiberglass stocks that feature a close radius upright grip, textured gripping surfaces and multiple sling mounting points. Both comb height and length of pull are fully adjustable on item # 58129 and #58130.